Cutting-machine



H. E. M'ATHERS- CUTTING MACHINE.

APPLICATION men JAN. 5. 191B.

1,308,600. Patented July 1, 1919.

2 SHEETS-SHEET v.

20 24 g fi 23 THE COLUMBIA PLANOORAPH 30., vlAslilNd'rcN. D. c-

H. E. MATHERS.

CUTTING MACHINE.

APPLICATION man mu. 5. ma.

1,308,600. Patented July 1, 1919.

2 SHEETS-SHEET 2 I1 7 0. Z I

attozncq THE cuuJMnlA PLANOORAFH c0., WASHINGTON, D. c.

'UNlTED STATES PATENT OFFI 'HABRYE. MATHERS, E DELTA, COLORADO.

concerns- CHINE.

- erally, to cutting machines, and the invention' relates, more particularly, to an improved feed for cutting machine.

The invention has for its dominant object to provide a cutting machine having a j Y -movable carriage, which carriage is automatic ally advanced with each operation of the cutting means, thus, advancing the material being cut or sliced thereby and insuring'the cutting of predetermined quantities.

Another object of the invention is to provide'novel means for automatically advancing the carriage previous to the cutting operatiomthe said means being movable independently of the cutting means, whereby, the carriage may be returned subsequent to the cutting of the material as carried thereby and also allowing adjusting of the carriage, irrespective of the cutting means.

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A further object of the invention is to provide the carriage advancing means with means for varying the movementof the same and as a consequence, the movement of the carriage.

Among other aims and objects of the invention may be recited, the provision of a device of the character mentioned with a view to compactness, and in which the numleer of parts are few, the construction simple, the cost of production small, and efficiency and operation high.

Other improvements and novel details in the construction and arrangement of the various parts of the device will be brought out more in detail in the description to follow, which for a clear understanding of the invention, should be considered in connection with the accompanying drawings forming parts hereof and wherein is disclosed for the purpose of illustration, a convenient and satisfactory embodiment of the invention.

In the drawings:

Figure 1 is a side elevation of my im-. 7 proved cuttlng machine;

Fig. 2 is a top plan thereof; Fig. 3 is a fragmentary front elevation of the machine;

Specification of Letters Patent.

Patented July 1, 1919.

Application filed January 5', 1918. Serial N 0. 210,559.

Fig. 4 is a detail in elevation showing the mounting of the advancing pawl; and

Fig. 5 is a disassembled perspective of the same.

Similar characters of reference are employed in all of the above described views to indicate corresponding parts.

Referring now more specifically to the several figures of the said drawings, there is provideda base 1, a. portion of which is stepped as at 2 and has secured to'its outer marginal edge thereof a retaining or guide plate 3, the plate being secured in position through the medium of screws or the like 4.

A'post5 is securely mounted upon the .base 1 adjacent the steppe'd'portion 2 thereof and pivotally supports a knife carrying arm 6, the knife designated 7 having the cutting edge thereof so arranged as to permit the even engaging thereofw-ith the surface of the material carryingand feeding carriage, which will be subsequently described. A metal strapS is secured to one side of the post 5 and receives a portion of the knife carryingarm 6 therein, obviously, serving to prevent undue lateral movement thereof during its pivotal or cutting movement.

A material carrying and feeding carriage 9 is slidably arranged within the stepped portion 2 of'the base and has secured" to one side thereof a ratchet bar10, the teeth of which project slightly above the upper surface thereof.

A bracket 11 is secured to thebase, parallel to the stepped portion2 thereof and has its upper extremity provided with a receiving channel 12, whereby a block 13 having a plurality of openings therein may be sli'dably mounted upon the same. An angle arm 14 is pivotally secured to the slidable block 13 adjacent one of the openings therein as at 15, while through the remaining opening, a pivot bolt 16 is passed which supports thereon, a pawl 17 having an upper extension thereon whereby a contractile spring 18 may be connected to the same and to a portion of the angle arm 14. Obviously, due to the engagement of the spring 18 with the pawl, the tooth thereof will be normally maintained in engagement with the teeth of the ratchet bar 10.

A curved arm 19 is pivotally mounted upon one side of the post 5, as at 20, and has one extremity thereof slotted as'at 21, whereby, the free extremity of the angle arm 14 may he pivotally and slidably cow 'coiled spring is secured at its upper end to the free end of the curved arm 19 and at its lower end to the base 1 and affords means for normally holding the slidable block 13 a carriageslidable on said base carrying in its retracted position, due to the engagement of the angle arm 14 therewith. To prevent undue downward movement of the free extremity of the curved arm 19, a slotted abutment 24 is secured to the adjacent side of the post 5 and is engaged thereby at times.

It is to be noted, that the free extremity of the curved arm 19 is arranged in the path of travel of the pivotal knife carrying arm and as a consequence, when the said arm is swung upwardly previous to the cutting operation, reciprocatory movement will be imparted by way of the curved arm 19 and angle arm 14 to the slidable block 13, thus, advancing the pawls 17 together with the slidable carriage 9. As the pivotal knife carrying arm is swung downwardly to cause enga 'ement of the knife 7 with the material, the s idable block 13 will be returned to its normal position within the channeled way 12, thus, reengaging the pawl 17 with the preceding tooth on the ratchet bar 10.

From the foregoing, it is evident, that with my improved cutting machine, the slidable carriage 9 will be automatically advanced a predetermined distance, thus, in-

suring the cutting of a predetermined quan: tity from the material arranged upon the carriage. Should it be desired to increase the amount of material cut by the machine,

the bolt 22 carried upon the angle arm 14 may be loosened 'andadjusted within the slot 21 to vary the course of the angle arm 14 and the movement of the slidable block 13.

Manifestly, the construction shown is capable of considerable modification and such modification as is within the scope of my claims, I consider within the spirit of my invention.

I claim:

1. A cutting machine including a base,

ratchet teeth-adjacent one longitudinal edge thereof, ratchet means slidably supported on the base engageable with said ratchet teeth,

trip m eans adzjustably connected to saidratchet means and normally held in a predetermined position, and an arm disposed transversely of the base and the carriage adapted to engage and actuate said trip member upon a raising of the arm.

2. A cutting machine including a base, a carriage slidable on said base having ratchet teeth arranged thereon adjacent one longitudinal edge thereof, a bracket immovably supported on the base, a plate sli'dably mounted on the bracket, a pawl pivoted to the plate normally engaged with the ratchet teeth on the carriage, a post arranged on the base, a curved arm pivoted to said post having its upper end arranged in a substantially horizontal plane, means for effecting adjustable connection between the remaining end of the arm and said slidable plate for causing the same to be moved predetermined distances, said curved arm being normally held in a predetermined position to which it returns subsequent to operation, and a knife carrying arm disposed transversely of the base and carriage and pivoted to said post, one portion of said arm being engageable with the horizontal upper portion of the curved arm for actuating the same upon raising of said arm.

In testimony whereof, I affix my signature hereto.

- HARRY E. MATHERS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

